#include <iostream>
#include <string>

using namespace std;

int main(int argc, char const *argv[])
{
    
    string str_1 = "唐三";
    string str_2 = "唐三";
    string str_3 = str_1 + str_2;

    if (str_1 == str_2)
    {
        cout << "两个字符串一样" << endl;
    }
    
    cout << str_3 << endl;
    
    return 0;
}
